So while a filter is not necessary for your fish tank, you could be limited to the amount and types of fish you will be able to keep. If you can provide the right amount of biological filtration without the use of a filter, then your fish should be safe. The filter decomposes waste (ammonia), converts it into nitrite, and then further converts it into safe and harmless nitrate, filtering out the harmful components of aquatic life in the water. Biofiltration helps to recirculate the water tank, which basically means making sure that the water in your tank is safe enough for your fish to survive and thrive. Because what you really need is enough biological filtration in your aquarium. In this case, due to their small size and a small amount of water, it is difficult to provide proper filtration, and in some cases, water needs to be changed more frequently every day.Īs mentioned earlier, filters are not necessary to maintain a healthy fish tank. However, not all healthy fish tanks require the use of mechanical and chemical filtration.Ī simple example: carbon or any other form of chemical filtration should only be used when needed. Another thing to consider when considering adding a filter is that some people (though not recommended) use small fish tanks, vases, and bowls to raise fish. Filters provide a place for beneficial bacteria to grow it's important to know that all aquariums require some form of biological filtration, and filters are the easiest way to achieve this.īiological filtration is 100% necessary in any aquarium to help reduce toxins and reduce the amount of maintenance required. Filters can help water oxidation by creating surface agitation.ģ. The filter keeps the tank clean by removing debris and toxins such as ammonia and nitrates.Ģ. There are some things a filter can do for your tank:ġ. But this article will go a bit deeper so you can understand exactly what filters do and why most people recommend them, even if they are not necessary for tanks.
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